Grapevine plant named &#39;trasemis&#39;

ABSTRACT

A new grapevine variety distinguished by its leaf blistering, length of teeth, blade size, bunch length, area of anthocyanin coloration of main veins on upper side of blade of mature leaf, goffering of blade of mature leaf, resistance to downy and powdery mildew and winterhardiness.

Genus and species: Vitis vinifera L.

Variety denomination: ‘TRASEMIS’.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority from QZ Community Plant Variety Office (CTVO) Application No. 20213392, filed Dec. 21. 2021.

BACKGROUND

The present application relates to a new and distinct variety of grapevine named ‘TRASEMIS’. Our new plant resulted from a planned hybridization program and is a selection from crossing ‘SK-00-1/10’ (unpatented) as the seed parent with ‘TRAMINER’(unpatented) as the pollen parent in 2009. The resulting plant was selected in 2017 when growing in a cultivated area in Udine, Italy.

SUMMARY

The ‘TRASEMIS’ variety is distinguished from other grapevine varieties due to the following unique combination of characteristics: leaf blistering, length of teeth, blade size, bunch length, area of anthocyanin coloration of main veins on upper side of blade of mature leaf, goffering of blade of mature leaf, resistance to downy and powdery mildew and winterhardiness. ‘TRASEMIS’ is distinguished from the male parent ‘TRAMINER’ as described in Table 1.

TABLE 1 Comparison to male parent. Male Parent Characteristic ‘TRASEMIS’ ‘TRAMINER’ Leaf Blistering Absent or Very Strong Weak Length of Teeth Medium Very Small Size of Blade Medium Small Mature Leaf: area of Up to the 2^(nd) Absent anthocyanin coloration bifurcation of main veins on upper side of blade Mature Leaf: Weak Very strong goffering of blade Bunch Length Medium Short (peduncle excluded) Disease Resistance Resistant to downy No resistance to mildew and to downy mildew or powdery mildew to powdery mildew Winter Hardiness Resists up to −23° C. Resists up to −18° C.

‘TRASEMIS’ is distinguished from the female parent ‘SK-00-1/10’ as described in Table 2.

TABLE 2 Comparison to female parent. Female Parent Characteristic ‘TRASEMIS’ ‘SK-00-1/10’ Flower: sexual organs Fully developed Reflexed stamens and stamens and fully fully developed developed gynoecium gynoecium Berry: color of skin Yellow rose Yellow Mature Leaf: size of Medium Large blade Mature Leaf: shape of Circular Wedge-shaped blade

Of the many commercial cultivars known to the present inventors, the most similar to the new grapevine ‘TRASEMIS’ is ‘TRAMINER’, to which a comparison has been provided above.

Asexual reproduction of this new variety by vegetative cuttings shows that the foregoing characteristics come true to form, are firmly fixed, and are established and transmitted through succeeding propagations. The cuttings are grafted onto K5BB rootstock clone VCR 102. The new variety was asexually reproduced in Rauscedo (PN), Italy.

Certain characteristics of this variety may change with changing environmental conditions (such as photoperiod, temperature, moisture, soil conditions, nutrient availability, or other factors). Color descriptions and other terminology are used in accordance with their ordinary dictionary descriptions unless the context clearly indicates otherwise. Color designations (hue/value/chroma) are made with reference to The Royal Horticultural Society (R.H.S.) Colour Chart, 6^(th) edition, London, England, 2019.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a photograph showing a mature leaf from a four year old plant of the new variety ‘TRASEMIS’ taken on Jun. 10, 2021, in Rauscedo (PN), Italy.

FIG. 2 is a photograph showing a shoot tip from a four year old plant of the new variety ‘TRASEMIS’ taken on May 21, 2021, in Rauscedo (PN), Italy.

FIG. 3 is a photograph showing fruit from a four year old plant of the new variety ‘TRASEMIS’ taken on Sep. 14, 2021, in Rauscedo (PN), Italy.

FIG. 4 is a photograph showing a four year old plant of the new variety ‘TRASEMIS’ taken on Sep. 14, 2021, in Rauscedo (PN), Italy.

The color photographs show typical specimens of the new variety and depict the color as nearly true as is reasonably possible to make the same in a color illustration of this character. It should be noted that colors may vary, for example due to lighting conditions at the time the photograph is taken. Therefore, color characteristics of this new variety should be determined with reference to the observations described herein, rather than from the photographs alone.

DETAILED BOTANICAL DESCRIPTION

The following detailed description of the ‘TRASEMIS’ variety is based on observations of asexually reproduced progeny. The observed progeny are plants that were 2-4 years of age. The following detailed description concerns plants growing in an open field in Rauscedo (PN), Italy in 2019-2021. The original plant and progeny have been observed growing in a cultivated area in Rauscedo (PN), Italy, with medium texture soil that is rich in skeleton and alluvial in nature. Temperatures in Rauscedo, Italy range from a high of 29° C. to a low of −2° C. Average rainfall is 822 mm per year, with an average rainfall during the growing season (April-September) of 453 mm.

The chart used in the identification of colors described herein is the R.H.S. Colour Chart, 6^(th) edition, except where general color terms of ordinary significance are used. The color values were determined in August-September, 2021 under natural light conditions in Rauscedo (PN), Italy.

-   Scientific name: Vitis vinifera L. -   Parentage:     -   -   Seed parent.—SK-00-1/10.         -   Pollen parent.—‘TRAMINER’. -   Plant:     -   -   Vigor.—High.         -   Growth habit.—Erect or semi-erect.         -   Plant height.—2.0-2.2 m.         -   Plant width.—0.8-1.0 m.         -   Trunk diameter.—5-6 cm.         -   Trunk texture.—Striate.         -   Bark coloration.—RHS 177C.         -   Mature cane (woody shoot).—Diameter: Approximately 9.5 mm.             Texture: Smooth to Striate. Color: RHS 199B. -   Shoot:     -   -   Openness of the shoot tip.—Fully open for young shoot.         -   Distribution of the anthocyanin coloration of the prostrate             hairs of the shoot tip.—Piping.         -   Density of prostate hair on the shoot tip.—High.         -   Attitude (before tying).—Erect to semi-erect.         -   Color of the dorsal side of internodes.—RHS 144A.         -   Color of the ventral side of internodes.—RHS 144A.         -   Distribution of anthocyanin coloration on the bud             scales.—Absent.         -   Tendrils.—Length: Approximately 10.5 cm. Diameter:             Approximately 2.04 mm. Color: RHS 152D. Number of             Consecutive Tendrils: 2 or less. -   Leaves:     -   -   Size.—Length: approximately 175 mm. Width: approximately 179             mm.         -   Shape.—Circular.         -   Number of lobes.—Five.         -   Arrangement.—Upper lateral sinuses are slightly overlapped             and the shape of the base is U; the petiole sinus is closed             or overlapping.         -   Teeth.—Medium (approximately 8 mm in length and             approximately 8 mm in width).         -   Blistering.—Absent or very weak.         -   Size of blade.—Medium (approximately 175 mm in length and             approximately 179 mm in width).         -   Density of prostrate hairs.—Medium to dense (between main             veins on lower side of blade).         -   Leaf color.—Immature Leaf: Upper Surface: Green (RHS 152A),             some with anthocyanin spots. Lower Surface: RHS 148A. Mature             Leaf: Upper Surface: RHS 143A. Lower Surface: RHS 139C.         -   Leaf texture.—Upper Surface: Smooth. Lower Surface: Very             weak goffering.         -   Color of veins.—Upper Surface: RHS 141B. Lower Surface: RHS             141C.         -   Petiole.—Color: RHS 144C-184A. Length: 80 mm. Diameter:             4 mm. Texture: Smooth.         -   Stem.—Color: RHS 144A (young); 199B (woody shoot). Length:             1.3-1.5 m. Diameter: 10 mm. Length of Internodes: 9 cm.             Texture: Smooth.         -   Density of prostrate hairs on petiole.—None or very low.         -   Density of erect hairs on petiole.—None or very low.         -   Depth of upper lateral sinuses.—Medium. -   Flowers:     -   -   Size.—Length: 3.2 mm. Diameter: 4.4 mm.         -   Shape.—Fully developed stamens and fully developed             gynoecium.         -   Bud.—Shape: Eye. Size: 2.89 mm×2.89 mm. Color: RHS 144A.         -   Petals.—Petals per Flower: 5. Shape: Elongated oval. Color:             RHS 144A. Petal Margin: Smooth. Petal Waviness: Reflexed.             Petal Lobation: Absent. Petal Texture: Upper surface is             smooth to striate and under surface is smooth. Size: 3.17 mm             long; 1.94 mm wide.         -   Stamen.—Fully developed; 5 in number; 3-3.2 mm in length.         -   Anthers.—RHS 9D in color; 1.2-1.5 mm in length.         -   Pollen.—RHS 9D in color.         -   Gynoecium.—Fully developed.         -   Pistil.—Color: RHS 144A. Stigma Length: 0.7-1 mm. Stigma             Shape: The top is open. Number of Styles: 1.         -   Pedicel.—Length: 1.5-4 mm. Diameter: 0.5-0.8 mm. Color: RHS             144C.         -   Sepals.—Length: 0.3-0.5 mm. Width (at base): 0.6-0.7 mm.             Shape: Triangle. Color: RHS NN137A.         -   Quantity of inflorescences.—11.1 per plant.         -   Date of bloom.—Beginning of June in Rauscedo (PN), Italy.         -   Lastingness of individual blooms.—3 days.         -   Corolla tube color.—RHS 144A.         -   Corolla tube length.—3-3.2 mm.         -   Corolla texture.—Smooth.         -   Calyx.—Color: Upper surface is RHS NN137A and lower surface             RHS NN137D. Length: 0.3 mm. Width: 1.5 mm. Shape: Pentagon             with beveled corners. Margin: Smooth. Texture: Upper surface             and lower surface are smooth.         -   Fragrance.—Average. -   Fruit:     -   -   Time of beginning of berry ripening.—August 10 in Rauscedo             (PN), Italy.         -   Berry shape.—Globose.         -   Berry size.—Approximately 13 mm in length; and approximately             13 mm in diameter.         -   Pruinosity.—Medium-high.         -   Pulp firmness.—Soft.         -   Flesh color.—RHS 150C.         -   Anthocyanin coloration of flesh.—Absent or very weak.         -   Skin.—Thickness: Thin. Color (without bloom): Yellow rose             (RHS 186A).         -   Seed.—Seed Formation: Complete. Number of Seeds: 3-4. Size:             3 mm in length and 1.5-2 mm in width. Color: RHS 200C-200D.         -   Berry flavor.—Other than muscat, foxy or herbaceous.         -   Harvest time.—September 4 in Rauscedo (PN), Italy.         -   Bunch length (peduncle excluded).—16 cm.         -   Bunch width.—12.5 cm.         -   Bunch density.—Medium.         -   Length of peduncle of primary bunch.—Approximately 50 mm.         -   Lignificaiton of peduncle.—More than the middle.         -   Berry hilium.—Visible. -   Use: Wine grape. -   Disease/pest resistance: Resistant to downy and powdery mildew: -   Must characteristics:     -   -   Sugars (Brix).—21.9.         -   pH.—3.2.         -   Total acidity.—7.7 g/l.         -   Tartaric acid.—6.9 g/l.         -   Malic acid.—2.8 g/l. -   Production characteristics:     -   -   Clusters per shoot.—1.2.         -   Grape production.—2289 g/plant.         -   No. of bunches/vine (at harvest).—11.1.         -   Average weight of the bunch.—202 g.         -   Average berry weight.—1.3 g.         -   Pruning wood weight.—616 g/plant. -   Index of ravaz: 3.7: -   Wine produced from grapes:     -   -   Total acidity.—7.0 g/l.         -   Tartaric acid.—3.4 g/1.         -   pH.—3.2.         -   Net extract.—20.9 g/l.         -   Alcohol.—12.7 g/l.         -   Volatile acidity.—0.3 g/l.         -   Reducing sugars.—3.8 g/l.

TABLE 1 Molecular Analysis VV VV VV VV VV VV VV VR VR S2 MD5 MD7 MD25 MD27 MD28 MD32 ZAG 62 ZAG 79 N + N + N + N + N + N + N + N + N + N + N + N + N + N + N + N + N + N + 28 28 6 10 12 22 14 14 6 14 12 18 5 37 14 26 6 14

-   Table 1 uses international coding based on “N” (see, European     project GENRES 081 -A basis for the preservation and utilization of     Vitis genetic resources): -   Phenological characteristics (in Rauscedo, Italy):     -   -   Germination.—April 8.         -   Flowering.—Jun. 6.         -   Veraison (change of color).—August 10.         -   Maturation.—September 4. 

We claim:
 1. A new and distinct variety of Vitis vinifera L. plant substantially as illustrated and described herein. 